ARM is promising close to 70 percent processor power savings with a new chip design called Big.Little, and mobile devices on display at the Mobile World Congress provided the first glimpse of how the technology works.

The mobile chipset market is in a state of flux with a number of key vendors struggling, but analysts say the result of the turmoil will be more advanced high-end smartphones and cheaper low-end devices.

The screen was particularly good. It is bright and visible from most angles, however heat is an issue, particularly around the Windows button on the front, and on the back where the battery housing is located.

My first impression after unboxing the Q702 is that it is a nice looking unit. Styling is somewhat minimalist but very effective. The tablet part, once detached, has a nice weight, and no buttons or switches are located in awkward or intrusive positions.

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